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  2. Surface treatment of PTFE - Wikipedia

    en.wikipedia.org/wiki/Surface_treatment_of_PTFE

    In adhesion tests per ASTM D4541, in which an aluminum stud is bonded to the test surface and the stud is pulled in the direction normal to the surface, both surfaces of the failure interface were analyzed by X-ray photoelectron spectroscopy (XPS). F/C ratio was used as an indicator of the failure mode: F/C of zero corresponds to failure in the ...

  3. Delamination - Wikipedia

    en.wikipedia.org/wiki/Delamination

    ASTM D5528 specifies the use of the double cantilever beam (DCB) specimen geometry for determining mode I interlaminar fracture toughness. [17] A double cantilever beam specimen is created by placing a non-stick film between reinforcement layers in the center of the beam before curing the polymer matrix to create an initial crack of length a 0 ...

  4. Direct tension indicator - Wikipedia

    en.wikipedia.org/wiki/Direct_tension_indicator

    DTIs within the RCSC specification section 8.2.4 are described thus: "ASTM F959 direct tension indicators are recognized in this Specification as a bolt-tension-indicating device. Direct tension indicators are hardened washer shaped devices incorporating small arch-like protrusions on the bearing surface that are designed to deform in a ...

  5. Hardness comparison - Wikipedia

    en.wikipedia.org/wiki/Hardness_comparison

    Print/export Download as PDF; Printable version; In other projects Wikidata item; Appearance. move to sidebar hide ... ASTM E140-12B(2019)e1: "Standard Hardness ...

  6. List of thread standards - Wikipedia

    en.wikipedia.org/wiki/List_of_thread_standards

    Unified Inch Screw Threads (UNJ Thread Form) V Thread Form ASME B1.20.1-2013: Pipe Threads, General Purpose (Inch) Pipe Thread Form ANSI B1.20.3-1976 (R2013) Dryseal Pipe Threads (Inch) Pipe Thread Form ASME B1.20.7-1991 (R2013) Hose Coupling Screw Threads - Inch: Pipe Thread Form ASME B1.21M-1997 (R2013) Metric Screw Threads - MJ Profile: V ...

  7. Pavement condition index - Wikipedia

    en.wikipedia.org/wiki/Pavement_Condition_Index

    The pavement condition index (PCI) is a numerical index between 0 and 100, which is used to indicate the general condition of a pavement section.The PCI is widely used in transportation civil engineering [1] and asset management, and many municipalities use it to measure the performance of their road infrastructure and their levels of service. [2]

  8. US FDA proposes standardized testing to detect asbestos in ...

    www.aol.com/news/us-fda-proposes-standardized...

    The healthcare giant seeks to resolve the claims through an approximately $10 billion settlement in bankruptcy. It has denied the allegations and called its products safe.

  9. Resin identification code - Wikipedia

    en.wikipedia.org/wiki/Resin_identification_code

    www.astm.org /d7611 _d7611m-21.html Resin code for polyethylene terephthalate Polypropylene lid of a Tic Tac box, with a living hinge and the resin identification code, 5, under its flap The Resin Identification Code ( RIC ) is a technical standard with a set of symbols appearing on plastic products that identify the plastic resin out of which ...

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